Old Mr. Lo has three sons and the youngest one Lo Kung is his favorite. However, Kung does nothing but fool around all day long. Old Mr. Lo is very annoyed about this. The relationship between father and son is thus affected. So on Kung's birthday, his two brothers decide to play a joke on him. They trick him into believing he has won the lottery. Kung is so happy that he spends a tremendous amount of money. When he realizes he is in huge debt, he pretends to go insane and the whole family believes him.

Seven young ladies who grew up in the housing projectget along well together, although they have different personalities. The seven always hang out around the Lan Kwai Fong area and named the group "Lan Kwai Fong Seven Princesses". Later after a dispute with the "West Kowloon Center Pair of Queens", the seven princesses suddenly are swept into the midst of a crime wave, as the seven even begin to fight among themselves...